Cytoscape WikiThe DropTarget is only needed if the CytoscapeEditor is loaded, so we can redesign PhoebeCanvas to only add a drop target to itself if the CytoscapeEditor is active. PhoebeCanvas is going to need to change, anyway, since it currently is based upon Picolo's PCanvas class. Under the new renderer, Picolo will be going away, so this modularity with respect to drop targets can be designed into the new incarnation of PhoebeCanvas.